The TPS7A10 device is an ultra-small, low quiescent current, low-dropout regulator (LDO)
that can source 300 mA with outstanding ac performance (PSRR, load, and line transient responses).
This device has an output range of 0.5 V to 3.0 V with a maximum 1.5% accuracy.
The VBIAS rail that powers the internal circuitry of the LDO draws
very low current IQ (5-µA), and can be connected to a power supply that is
equal to or greater than 1.4 V above the output voltage. The main power path is through
VIN, which can be a lower voltage than VBIAS; this
path can be as low as VOUT + VDO, increasing the
efficiency of the solution in many power-sensitive applications. For example,
VIN can be an output of a high-efficiency, dc/dc step-down regulator, and
the VBIAS pin can be connected to an Li-ion battery.
The TPS7A10 is stable with ceramic capacitors and yields a dropout voltage of 90 mV (max)
at a 300-mA output load. In addition, the TPS7A10 is equipped with the active pulldown feature that
actively pulls down the output to quickly discharge the outputs and ensures a known start-up state.
The TPS7A10 is fully specified over the ambient temperature range of
TJ = –40°C to +125°C, and uses a precision voltage reference and feedback
loop to achieve an overall accuracy of 1.5% overtemperature. The device is available in a 5-pin
DSGBA, which is an ultra-small wafer chip-scale package (WCSP), that makes the device suitable for
handheld applications. The TPS7A10 is also available in a 6-pin WSON package.
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